Rent is varialble to your location. Should never pay more than $1.5-2.0 per sq ft. Inventory will run you $75,000 on the low, and $250 if your store is small. Higher sq ft means more inventory. Shelving you can pick up industrial pretty cheaply. Starting capital for a small wine store would be $200-250 for inventory and finishout. Licensing will run you $2500-5000. You'll need operating capital of atleast 6 months. Again, all of this depends on your specific location and govt. regulations. I would certainly have a small biz association do a feasiblity study. Likewise any business school can give you a couple grads to assist you with this.